The first two wave types, P and S, are called body waves because they travel or propagate through the body of Earth. The latter two are called surface waves they the travel along Earth's surface and their amplitude decreases with depth into Earth.
Toysmith Spring Ring Game. Here is a super fun game the kids might like. Nordstrom has this Toysmith Spring Ring Game for $14.98! That is down from the normal price of $24.99, for a 40% savings.
Like others have pointed out, it really varies depending on the quality of the actual diamond. $7,700-$84,810 depending on the colour, cut, clarity and setting for real 3 carat diamond ring (The cheapest and most expensive 3 carat diamond [video]). If you want to buy 2 carat, it would probably be between $2,000- $15,000 depending on those things.